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Original file line number Diff line number Diff line change
Expand Up @@ -24,9 +24,16 @@ The affected O/S distributions are:
- AlmaLinux versions 8 and 9
- Fedora versions 37 and 38.

<Message type="note">
CentOS 7.9 is not concerned by this issue as it does not support routed IP.
</Message>

This guide addresses specific issues related to RHEL-based Instances after transitioning to routed IP.
For general information on routed IPs and migration procedures, refer to our [main migration guide](/instances/how-to/migrate-routed-ips/) and the [related FAQ](/faq/instances/#are-there-any-limitations-on-ip-autoconfiguration-with-the-routed-ip-feature).

## Cause

CentOS 7.9 is not concerned by this issue as it does not support routed IP. This guide addresses specific issues related to RHEL-based Instances after transitioning to routed IP. For general information on routed IPs and migration procedures, refer to our [main migration guide](/instances/how-to/migrate-routed-ips/) and the [related FAQ](/faq/instances/#are-there-any-limitations-on-ip-autoconfiguration-with-the-routed-ip-feature).
This issue is caused by a missing NetworkManager configuration for IPv6 address generation mode (`ipv6.addr-gen-mode=0`) on RHEL-based instances.

## Possible solution

Expand Down